package com.lzxuni.common.utils.web;

import java.util.Random;

/**
 * 〈一句话功能简述〉<br>
 *
 * @author szq
 * @create 2018-03-14 20:14
 **/

public class IpGenerate {

	public static void main(String[] args) {
		String randomIp = getRandomIp();
		System.out.println(randomIp);
	}
	public static String getRandomIp(){
		//ip范围
		int[][] range = {{607649792,608174079},//36.56.0.0-36.63.255.255
				{1038614528,1039007743},//61.232.0.0-61.237.255.255
				{1783627776,1784676351},//106.80.0.0-106.95.255.255
				{2035023872,2035154943},//121.76.0.0-121.77.255.255
				{2078801920,2079064063},//123.232.0.0-123.235.255.255
				{-1950089216,-1948778497},//139.196.0.0-139.215.255.255
				{-1425539072,-1425014785},//171.8.0.0-171.15.255.255
				{-1236271104,-1235419137},//182.80.0.0-182.92.255.255
				{-770113536,-768606209},//210.25.0.0-210.47.255.255
				{-569376768,-564133889}, //222.16.0.0-222.95.255.255
		};

		Random rdint = new Random();
		int index = rdint.nextInt(10);
		String ip = num2ip(range[index][0]+new Random().nextInt(range[index][1]-range[index][0]));
		return ip;
	}

	public static String num2ip(int ip) {
		int [] b=new int[4] ;
		String x = "";

		b[0] = (int)((ip >> 24) & 0xff);
		b[1] = (int)((ip >> 16) & 0xff);
		b[2] = (int)((ip >> 8) & 0xff);
		b[3] = (int)(ip & 0xff);
		x=Integer.toString(b[0])+"."+Integer.toString(b[1])+"."+Integer.toString(b[2])+"."+Integer.toString(b[3]);

		return x;
	}

}
